Company lists · Data refreshed September 2026
Top 25 Preemptive cybersecurity companies based in San Francisco, United States
RevenueBase identified 60 company matches for preemptive cybersecurity companies associated with San Francisco, United States as of September 2026 and tracks 4,953 professional contacts across them, including 1,042 with verified work emails. Across the United States, New York is the largest hub for this category (108 companies); San Francisco has 60.
This list covers company matches for preemptive cybersecurity companies associated with San Francisco, United States, found by RevenueBase SmartSearch using the meaning of business descriptions in its company graph at Exact. Ranked by professionals tracked, largest first. Rows show recorded descriptions where available, Exact search membership and the snapshot date. Data refreshed September 27, 2026.
Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase SmartSearch, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.
The 25 largest preemptive cybersecurity companies based in San Francisco, United States
Ranked by team size| # | Company | Contacts | |||
|---|---|---|---|---|---|
| 1 | 3,649 contacts → | ||||
Exact match “We are a crowdsourced security company that safeguards organizations' assets from sophisticated threat actors before they can strike-by uniting our customers with trusted hackers…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 2 | 375 contacts → | ||||
Exact match “We protect the world’s critical infrastructure from cyber threats.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 3 | 364 contacts → | ||||
Exact match “Horizon3.ai answers the two most important questions in cybersecurity: If someone tried to compromise us, would we hold up?” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 4 | 211 contacts → | ||||
Exact match “Vehere is an AI cyber defense company operating at the intersection of national security and enterprise security.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 5 | 53 contacts → | ||||
Exact match “Cloudmark was acquired by Proofpoint.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 6 | 30 contacts → | ||||
Exact match “Enhanced security in minutes and get immediately unparalleled protection.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 7 | 27 contacts → | ||||
Exact match “We specialize in Web Application and API penetration Testing, Cyber Threat Intelligence, and Detecting Account Takeovers (ATOs) from attackers.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 8 | 24 contacts → | ||||
Exact match “Sentant is a next-generation cybersecurity & IT services firm with a team of experienced technology professionals.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 9 | 22 contacts → | ||||
Exact match “BlackFog is a global leader in AI-based cybersecurity and the pioneer of anti data exfiltration (ADX) technology.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 10 | 16 contacts → | ||||
Exact match “Operant AI is an industry-defining cybersecurity leader at the forefront of securing AI & MCP.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 11 | 14 contacts → | ||||
Exact match “EpicCyber: Empowering Your Business with Zscaler, Crowd strike, and Okta Cybersecurity Solutions” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 12 | 12 contacts → | ||||
Exact match “enSilo protects businesses around the world from data breaches and disruption caused by cyber attacks.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 13 | 10 contacts → | ||||
Exact match “At Securisea, we are trusted and proven experts in compliance and security.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 14 | 9 contacts → | ||||
Exact match “In the AI era, passwords and traditional MFA are no longer enough.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 15 | 7 contacts → | ||||
Exact match “PingSafe is now an important part of SentinelOne and our cloud security future.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 16 | 6 contacts → | ||||
Exact match “Humanize is an innovative and data-conscious company that transforms cybersecurity weaknesses to human readable quantified risks for C-Suite.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 17 | 4 contacts → | ||||
Exact match “Dogpatch Solutions is a leading IT consulting firm that specializes in cybersecurity assessments, migrations, networking and cloud computing solutions.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 18 | 4 contacts → | ||||
Exact match “At XIVX Risk & Threat Intelligence, we help groups minimize risk, understand threats, and achieve compliance the right way: through functional and effective cybersecurity.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 19 | 3 contacts → | ||||
Exact match “Advanced Linux defense technology is designed to protect critical infrastructure in real time.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 20 | 3 contacts → | ||||
Exact match “With over two decades of experience in sensitive data management across hundreds of clients and installations, we at TekLeap understand the inherent weaknesses and threats in…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 21 | 3 contacts → | ||||
Exact match “SecureNexa is a global cybersecurity partner for small and mid-sized businesses.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 22 | 2 contacts → | ||||
Exact match “Defend against cyber criminals with engaging security awareness and social engineering prevention videos, training, talks and penetration testing.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 23 | 2 contacts → | ||||
Exact match “Founded in 2005 as EXO5, Tether provides computer tracking and lockdown services for enterprise customers.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 24 | 1 contacts → | ||||
Exact match “Rubica exists to protect the "digital rights” of individuals and to empower people to take control of their security and privacy – and ultimately reduce the incidence of…” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
| 25 | 1 contacts → | ||||
Exact match “D3 Networks specializes in meeting the information technology and cybersecurity needs of firms in the financial industry.” Recorded in the RevenueBase company graph · Sep 27, 2026 · View company records in RevenueBase | |||||
RevenueBase SmartSearch
Describe a niche business in your own words. RevenueBase SmartSearch compares the meaning of your description with company business descriptions compiled in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit.
This list uses Exact for “preemptive cybersecurity companies”. Each Exact match badge shows membership in that saved search; it is not an individual similarity score or a service-quality rating. Recorded descriptions are shown where available.
Showing 25 of 60 preemptive cybersecurity companies based in San Francisco, United States
See the full list, filter by size, metro and specialty, and access 1,042 tracked professional contacts with verified work emails. Direct dials are available where recorded.
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Preemptive cybersecurity companies based in San Francisco, United States at a glance
As of Sep 27, 2026Companies by employee count
Email recency for this list is measured across the whole United States list rather than for San Francisco, so it is reported there. Company counts and contact totals on this page are exact for San Francisco, over 60 companies.
How this list was built
The recorded descriptions help you assess these company matches. Check a company’s website for its current services and locations.
- Source
- The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase SmartSearch, the natural-language company search available to every RevenueBase user.
- What qualifies
- Company records associated with San Francisco, United States whose business descriptions match “preemptive cybersecurity companies” by meaning at the Exact setting. Descriptions are compiled in the RevenueBase company graph from public websites, profiles and company information where available; they are not guaranteed quotations from the company's website.
- RevenueBase SmartSearch
- Describe a niche company in your own words to find businesses by meaning. Exact, Similar, Related and Broad control the breadth of RevenueBase SmartSearch. This saved list uses Exact. Each row's Exact match badge shows inclusion in that search, not an individual score or a service-quality judgment.
- Public preview
- The public preview omits records without a verified work email. Where headquarters information is recorded, preview rows are also filtered to this page’s location. Dataset totals and geographic summaries describe the full matched records before these preview filters.
- Match quality
- RevenueBase's August 25, 2026 study assessed 4,198 description/company pairs across matching settings. The publisher reports 86% good or better at Exact. This evaluates the method across queries; it does not audit this individual list. Recorded company descriptions, where available, help you judge each match yourself. Read the full methodology: how the lists are built and what the study measures.
- Ranking
- Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
- Verification
- Every displayed company carries at least one verified work email. RevenueBase tracks 1,042 professional contacts with verified work emails across the full matched dataset. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
- Refresh
- This page's figures were pulled from the company graph on September 27, 2026. Lists refresh periodically as the graph is re-checked.
- Record context
- Company records and descriptions can change. Check the company's website for its current services and locations.
Preemptive cybersecurity companies by metro in the United States
- Preemptive cybersecurity companies in New York108
- Preemptive cybersecurity companies in Chicago62
- Preemptive cybersecurity companies in Miami58
- Preemptive cybersecurity companies in Atlanta56
- Preemptive cybersecurity companies in Austin56
- Preemptive cybersecurity companies in Dallas56
- Preemptive cybersecurity companies in Houston52
- Preemptive cybersecurity companies in Washington50
- Preemptive cybersecurity companies in Boston36
- Preemptive cybersecurity companies in Tampa36
- Preemptive cybersecurity companies in San Diego33
- Preemptive cybersecurity companies in Los Angeles32
- Preemptive cybersecurity companies in Las Vegas29
- Preemptive cybersecurity companies in Orlando28
- Preemptive cybersecurity companies in Arlington27
- Preemptive cybersecurity companies in Denver26
- Preemptive cybersecurity companies in Phoenix25
Frequently asked
What is RevenueBase SmartSearch?
RevenueBase SmartSearch finds niche companies by the meaning of their business descriptions in the RevenueBase company graph. Exact, Similar, Related and Broad control how closely companies must fit your description. This list uses Exact for “preemptive cybersecurity companies”; each Exact match badge shows search membership, not an individual similarity or quality score.
How many preemptive cybersecurity companies are there based in San Francisco, United States?
RevenueBase identified 60 company matches for preemptive cybersecurity companies associated with San Francisco, United States as of September 2026, using the meaning of business descriptions at Exact. This is the recorded matched set in the RevenueBase company graph.
What is the largest company on this list?
Bugcrowd tops the displayed preview by professional contacts tracked in RevenueBase. Recorded headquarters appear in the company rows.
Which city in the United States has the most preemptive cybersecurity companies?
New York leads the United States with 108 company records, followed by Chicago (62) and San Francisco (60).
How do I get contact information for these companies?
A free RevenueBase account lets you run this exact search and work limited free results with 500 credits to start. Upgrading provides access to the 1,042 professional contacts with verified work emails tracked across these 60 companies; direct dials are available where recorded.
How current is this list?
The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 27, 2026.
Ready to reach these companies? Verified emails and direct dials for all 60 preemptive cybersecurity companies based in San Francisco, United States. Start with a free account, no credit card.
Download this list →Related lists
Preemptive cybersecurity companies by geography
- Preemptive cybersecurity companies based in Brisbane, Australia
- Preemptive cybersecurity companies based in Melbourne, Australia
- Preemptive cybersecurity companies based in Sydney, Australia
- Preemptive cybersecurity companies based in Calgary, Canada
- Preemptive cybersecurity companies based in Montreal, Canada
- Preemptive cybersecurity companies based in Ottawa, Canada
- Preemptive cybersecurity companies based in Toronto, Canada
- Preemptive cybersecurity companies based in Ahmedabad, India
- Preemptive cybersecurity companies based in Bangalore, India
- Preemptive cybersecurity companies based in Chennai, India
- Preemptive cybersecurity companies based in Gurgaon, India
- Preemptive cybersecurity companies based in Hyderabad, India
About this data
RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase SmartSearch, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Preemptive cybersecurity companies based in Brisbane, Australia
- Preemptive cybersecurity companies based in Melbourne, Australia
- Preemptive cybersecurity companies based in Sydney, Australia
- Preemptive cybersecurity companies based in Calgary, Canada
- Preemptive cybersecurity companies based in Montreal, Canada
- Preemptive cybersecurity companies based in Ottawa, Canada
Company intelligence · public preview
Top 25 preemptive cybersecurity companies based in San Francisco, United States
Find companies in any niche.
Describe the businesses you want in your own words. RevenueBase SmartSearch matches company descriptions by meaning.
RevenueBase records 60 matching company records for preemptive cybersecurity companies based in San Francisco, United States, with 4,953 tracked contacts and 1,042 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 27, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 preemptive cybersecurity companies based in San Francisco, United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 |  Bugcrowdbugcrowd.comHQ: San Francisco, CA, United StatesReported employees: Not recorded | San Francisco, CA, United States | Not recorded | Exact match | 3,649 contacts → |
“We are a crowdsourced security company that safeguards organizations' assets from sophisticated threat actors before they can strike-by uniting our customers with trusted hackers…” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 |  Nozomi Networksnozominetworks.comHQ: San Francisco, CA, United StatesReported employees: 201-500 | San Francisco, CA, United States | 201-500 | Exact match | 375 contacts → |
“We protect the world’s critical infrastructure from cyber threats.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 |  horizon3.aihorizon3.aiHQ: San Francisco, CA, United StatesReported employees: 201-500 | San Francisco, CA, United States | 201-500 | Exact match | 364 contacts → |
“Horizon3.ai answers the two most important questions in cybersecurity: If someone tried to compromise us, would we hold up?” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 |  Veherevehere.comHQ: San Francisco, CA, United StatesReported employees: 201-500 | San Francisco, CA, United States | 201-500 | Exact match | 211 contacts → |
“Vehere is an AI cyber defense company operating at the intersection of national security and enterprise security.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 |  Cloudmarkcloudmark.comHQ: San Francisco, CA, United StatesReported employees: 51-200 | San Francisco, CA, United States | 51-200 | Exact match | 53 contacts → |
“Cloudmark was acquired by Proofpoint.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 |  Strongestlayerstrongestlayer.comHQ: San Francisco, CA, United StatesReported employees: 51-200 | San Francisco, CA, United States | 51-200 | Exact match | 30 contacts → |
“Enhanced security in minutes and get immediately unparalleled protection.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 |  Seworksse.worksHQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 27 contacts → |
“We specialize in Web Application and API penetration Testing, Cyber Threat Intelligence, and Detecting Account Takeovers (ATOs) from attackers.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 |  Sentantsentant.netHQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 24 contacts → |
“Sentant is a next-generation cybersecurity & IT services firm with a team of experienced technology professionals.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 |  Blackfogblackfog.comHQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 22 contacts → |
“BlackFog is a global leader in AI-based cybersecurity and the pioneer of anti data exfiltration (ADX) technology.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 |  Operant AIoperant.aiHQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 16 contacts → |
“Operant AI is an industry-defining cybersecurity leader at the forefront of securing AI & MCP.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 |  Epiccyberepiccyber.comHQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 14 contacts → |
“EpicCyber: Empowering Your Business with Zscaler, Crowd strike, and Okta Cybersecurity Solutions” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 |  Ensiloensilo.comHQ: San Francisco, CA, United StatesReported employees: 51-200 | San Francisco, CA, United States | 51-200 | Exact match | 12 contacts → |
“enSilo protects businesses around the world from data breaches and disruption caused by cyber attacks.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 |  Securiseasecurisea.comHQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 10 contacts → |
“At Securisea, we are trusted and proven experts in compliance and security.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 |  Circle Securitycirclesecurity.aiHQ: San Francisco, CA, United StatesReported employees: 1-10 | San Francisco, CA, United States | 1-10 | Exact match | 9 contacts → |
“In the AI era, passwords and traditional MFA are no longer enough.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 |  Pingsafe NOW A Part Of Sentinelonepingsafe.comHQ: San Francisco, CA, United StatesReported employees: 51-200 | San Francisco, CA, United States | 51-200 | Exact match | 7 contacts → |
“PingSafe is now an important part of SentinelOne and our cloud security future.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 |  Humanize, INChumanize.securityHQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 6 contacts → |
“Humanize is an innovative and data-conscious company that transforms cybersecurity weaknesses to human readable quantified risks for C-Suite.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 |  Dogpatch Solutions INCdogpatchsolutions.comHQ: San Francisco, CA, United StatesReported employees: 1-10 | San Francisco, CA, United States | 1-10 | Exact match | 4 contacts → |
“Dogpatch Solutions is a leading IT consulting firm that specializes in cybersecurity assessments, migrations, networking and cloud computing solutions.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 |  Xivx Risk & Threat Intelligencexivx.comHQ: San Francisco, CA, United StatesReported employees: 1-10 | San Francisco, CA, United States | 1-10 | Exact match | 4 contacts → |
“At XIVX Risk & Threat Intelligence, we help groups minimize risk, understand threats, and achieve compliance the right way: through functional and effective cybersecurity.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 |  Threatoptixthreatoptix.aiHQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 3 contacts → |
“Advanced Linux defense technology is designed to protect critical infrastructure in real time.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 |  Tekleaptekleap.comHQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 3 contacts → |
“With over two decades of experience in sensitive data management across hundreds of clients and installations, we at TekLeap understand the inherent weaknesses and threats in…” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 |  Securenexasecurenexaglobal.comHQ: San Francisco, CA, United StatesReported employees: 1-10 | San Francisco, CA, United States | 1-10 | Exact match | 3 contacts → |
“SecureNexa is a global cybersecurity partner for small and mid-sized businesses.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 |  Socialproof Securitysocialproofsecurity.comHQ: San Francisco, CA, United StatesReported employees: 1-10 | San Francisco, CA, United States | 1-10 | Exact match | 2 contacts → |
“Defend against cyber criminals with engaging security awareness and social engineering prevention videos, training, talks and penetration testing.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 |  Tether Securitytethersecurity.comHQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 2 contacts → |
“Founded in 2005 as EXO5, Tether provides computer tracking and lockdown services for enterprise customers.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 |  Rubica, INCrubica.comHQ: San Francisco, United StatesReported employees: 11-50 | San Francisco, United States | 11-50 | Exact match | 1 contacts → |
“Rubica exists to protect the "digital rights” of individuals and to empower people to take control of their security and privacy – and ultimately reduce the incidence of…” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 |  D3 Networksd3networks.netHQ: San Francisco, CA, United StatesReported employees: 1-10 | San Francisco, CA, United States | 1-10 | Exact match | 1 contacts → |
“D3 Networks specializes in meeting the information technology and cybersecurity needs of firms in the financial industry.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
Showing 25 of 60 company matches
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Preemptive cybersecurity companies: dataset insights
September 27, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
59 records in the displayed employee bands.
1 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole United States list rather than for San Francisco, so it is reported there. Company counts and contact totals on this page are exact for San Francisco, over 60 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 27, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Preemptive cybersecurity companies by metro in the United States
- Preemptive cybersecurity companies in New York108
- Preemptive cybersecurity companies in Chicago62
- Preemptive cybersecurity companies in Miami58
- Preemptive cybersecurity companies in Atlanta56
- Preemptive cybersecurity companies in Austin56
- Preemptive cybersecurity companies in Dallas56
- Preemptive cybersecurity companies in Houston52
- Preemptive cybersecurity companies in Washington50
- Preemptive cybersecurity companies in Boston36
- Preemptive cybersecurity companies in Tampa36
- Preemptive cybersecurity companies in San Diego33
- Preemptive cybersecurity companies in Los Angeles32
- Preemptive cybersecurity companies in Las Vegas29
- Preemptive cybersecurity companies in Orlando28
- Preemptive cybersecurity companies in Arlington27
- Preemptive cybersecurity companies in Denver26
- Preemptive cybersecurity companies in Phoenix25
Questions about this company list
What does Exact match mean for preemptive cybersecurity companies?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many preemptive cybersecurity companies did RevenueBase find based in San Francisco, United States?
The saved snapshot records 60 matching company records, 4,953 tracked contacts and 1,042 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 27, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
Related lists
Preemptive cybersecurity companies by geography
- Preemptive cybersecurity companies based in Brisbane, Australia
- Preemptive cybersecurity companies based in Melbourne, Australia
- Preemptive cybersecurity companies based in Sydney, Australia
- Preemptive cybersecurity companies based in Calgary, Canada
- Preemptive cybersecurity companies based in Montreal, Canada
- Preemptive cybersecurity companies based in Ottawa, Canada
- Preemptive cybersecurity companies based in Toronto, Canada
- Preemptive cybersecurity companies based in Ahmedabad, India
- Preemptive cybersecurity companies based in Bangalore, India
- Preemptive cybersecurity companies based in Chennai, India
- Preemptive cybersecurity companies based in Gurgaon, India
- Preemptive cybersecurity companies based in Hyderabad, India
Cite this list
RevenueBase Data Team. Top 25 preemptive cybersecurity companies based in San Francisco, United States. Snapshot: September 27, 2026. https://revenuebase.ai/companies/preemptive-cybersecurity-companies/united-states/san-francisco.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
More company lists
- All company lists
- Lists by location
- Lists A-Z
- New lists
- Preemptive cybersecurity companies based in Brisbane, Australia
- Preemptive cybersecurity companies based in Melbourne, Australia
- Preemptive cybersecurity companies based in Sydney, Australia
- Preemptive cybersecurity companies based in Calgary, Canada
- Preemptive cybersecurity companies based in Montreal, Canada
- Preemptive cybersecurity companies based in Ottawa, Canada
Company intelligence · public preview
Top 25 preemptive cybersecurity companies based in San Francisco, United States
RevenueBase records 60 matching company records for preemptive cybersecurity companies based in San Francisco, United States, with 4,953 tracked contacts and 1,042 verified work emails.
This public preview shows 25 selected records ordered by tracked contacts. RevenueBase SmartSearch finds company descriptions that match by meaning at Exact. Snapshot: September 27, 2026.
RevenueBase compiles business descriptions for niche-company discovery; each row shows a recorded excerpt where available. Adapt this search to find the companies and contacts you want.
Top 25 preemptive cybersecurity companies based in San Francisco, United States
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
| # | Company | Headquarters on record | Reported employees | RevenueBase SmartSearch | Tracked contacts |
|---|---|---|---|---|---|
| 1 | Bugcrowdbugcrowd.com HQ: San Francisco, CA, United StatesReported employees: Not recorded | San Francisco, CA, United States | Not recorded | Exact match | 3,649 contacts → |
“We are a crowdsourced security company that safeguards organizations' assets from sophisticated threat actors before they can strike-by uniting our customers with trusted hackers…” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 2 | Nozomi Networksnozominetworks.com HQ: San Francisco, CA, United StatesReported employees: 201-500 | San Francisco, CA, United States | 201-500 | Exact match | 375 contacts → |
“We protect the world’s critical infrastructure from cyber threats.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 3 | horizon3.aihorizon3.ai HQ: San Francisco, CA, United StatesReported employees: 201-500 | San Francisco, CA, United States | 201-500 | Exact match | 364 contacts → |
“Horizon3.ai answers the two most important questions in cybersecurity: If someone tried to compromise us, would we hold up?” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 4 | Veherevehere.com HQ: San Francisco, CA, United StatesReported employees: 201-500 | San Francisco, CA, United States | 201-500 | Exact match | 211 contacts → |
“Vehere is an AI cyber defense company operating at the intersection of national security and enterprise security.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 5 | Cloudmarkcloudmark.com HQ: San Francisco, CA, United StatesReported employees: 51-200 | San Francisco, CA, United States | 51-200 | Exact match | 53 contacts → |
“Cloudmark was acquired by Proofpoint.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 6 | Strongestlayerstrongestlayer.com HQ: San Francisco, CA, United StatesReported employees: 51-200 | San Francisco, CA, United States | 51-200 | Exact match | 30 contacts → |
“Enhanced security in minutes and get immediately unparalleled protection.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 7 | Seworksse.works HQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 27 contacts → |
“We specialize in Web Application and API penetration Testing, Cyber Threat Intelligence, and Detecting Account Takeovers (ATOs) from attackers.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 8 | Sentantsentant.net HQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 24 contacts → |
“Sentant is a next-generation cybersecurity & IT services firm with a team of experienced technology professionals.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 9 | Blackfogblackfog.com HQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 22 contacts → |
“BlackFog is a global leader in AI-based cybersecurity and the pioneer of anti data exfiltration (ADX) technology.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 10 | Operant AIoperant.ai HQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 16 contacts → |
“Operant AI is an industry-defining cybersecurity leader at the forefront of securing AI & MCP.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 11 | Epiccyberepiccyber.com HQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 14 contacts → |
“EpicCyber: Empowering Your Business with Zscaler, Crowd strike, and Okta Cybersecurity Solutions” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 12 | Ensiloensilo.com HQ: San Francisco, CA, United StatesReported employees: 51-200 | San Francisco, CA, United States | 51-200 | Exact match | 12 contacts → |
“enSilo protects businesses around the world from data breaches and disruption caused by cyber attacks.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 13 | Securiseasecurisea.com HQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 10 contacts → |
“At Securisea, we are trusted and proven experts in compliance and security.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 14 | Circle Securitycirclesecurity.ai HQ: San Francisco, CA, United StatesReported employees: 1-10 | San Francisco, CA, United States | 1-10 | Exact match | 9 contacts → |
“In the AI era, passwords and traditional MFA are no longer enough.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 15 | Pingsafe NOW A Part Of Sentinelonepingsafe.com HQ: San Francisco, CA, United StatesReported employees: 51-200 | San Francisco, CA, United States | 51-200 | Exact match | 7 contacts → |
“PingSafe is now an important part of SentinelOne and our cloud security future.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 16 | Humanize, INChumanize.security HQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 6 contacts → |
“Humanize is an innovative and data-conscious company that transforms cybersecurity weaknesses to human readable quantified risks for C-Suite.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 17 | Dogpatch Solutions INCdogpatchsolutions.com HQ: San Francisco, CA, United StatesReported employees: 1-10 | San Francisco, CA, United States | 1-10 | Exact match | 4 contacts → |
“Dogpatch Solutions is a leading IT consulting firm that specializes in cybersecurity assessments, migrations, networking and cloud computing solutions.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 18 | Xivx Risk & Threat Intelligencexivx.com HQ: San Francisco, CA, United StatesReported employees: 1-10 | San Francisco, CA, United States | 1-10 | Exact match | 4 contacts → |
“At XIVX Risk & Threat Intelligence, we help groups minimize risk, understand threats, and achieve compliance the right way: through functional and effective cybersecurity.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 19 | Threatoptixthreatoptix.ai HQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 3 contacts → |
“Advanced Linux defense technology is designed to protect critical infrastructure in real time.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 20 | Tekleaptekleap.com HQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 3 contacts → |
“With over two decades of experience in sensitive data management across hundreds of clients and installations, we at TekLeap understand the inherent weaknesses and threats in…” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 21 | Securenexasecurenexaglobal.com HQ: San Francisco, CA, United StatesReported employees: 1-10 | San Francisco, CA, United States | 1-10 | Exact match | 3 contacts → |
“SecureNexa is a global cybersecurity partner for small and mid-sized businesses.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 22 | Socialproof Securitysocialproofsecurity.com HQ: San Francisco, CA, United StatesReported employees: 1-10 | San Francisco, CA, United States | 1-10 | Exact match | 2 contacts → |
“Defend against cyber criminals with engaging security awareness and social engineering prevention videos, training, talks and penetration testing.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 23 | Tether Securitytethersecurity.com HQ: San Francisco, CA, United StatesReported employees: 11-50 | San Francisco, CA, United States | 11-50 | Exact match | 2 contacts → |
“Founded in 2005 as EXO5, Tether provides computer tracking and lockdown services for enterprise customers.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 24 | Rubica, INCrubica.com HQ: San Francisco, United StatesReported employees: 11-50 | San Francisco, United States | 11-50 | Exact match | 1 contacts → |
“Rubica exists to protect the "digital rights” of individuals and to empower people to take control of their security and privacy – and ultimately reduce the incidence of…” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
| 25 | D3 Networksd3networks.net HQ: San Francisco, CA, United StatesReported employees: 1-10 | San Francisco, CA, United States | 1-10 | Exact match | 1 contacts → |
“D3 Networks specializes in meeting the information technology and cybersecurity needs of firms in the financial industry.” Recorded description excerpt · September 27, 2026Open company data in RevenueBase ↗Free signup required. | |||||
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Preemptive cybersecurity companies: dataset insights
September 27, 2026These summaries describe recorded coverage in this saved dataset. This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Reported company sizes
59 records in the displayed employee bands.
1 matching records are outside the displayed bands or do not have a displayed size. Bars show shares of the displayed bands.
Email recency for this list is measured across the whole United States list rather than for San Francisco, so it is reported there. Company counts and contact totals on this page are exact for San Francisco, over 60 companies.
How this company list was built
Describe a niche in your own words: companies installing commercial solar, or manufacturers of sustainable packaging. RevenueBase SmartSearch finds companies whose compiled business descriptions match by meaning. This list is one saved example to adapt.
Where the company descriptions come from
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
RevenueBase SmartSearch matching settings
- Exact
- Closest fits to the business described.
- Similar
- Similar businesses with a wider range of fits.
- Related
- Related businesses in and around the category.
- Broad
- A broader set of businesses connected to the description.
RevenueBase SmartSearch · Exact match identifies inclusion in this search's closest semantic matching setting. It is not a per-company confidence score, a literal keyword match, or a quality endorsement.
Selection, ordering and scope
The public list shows selected company records with contact and verified-email coverage. Reported employee bands provide separate company-size context.
This page is derived from saved source records; per-contact mobile coverage and email-recency results are not established by this snapshot.
Recorded company descriptions support research; check company websites for current services. The selected preview is ordered by tracked contacts and is not a list of the best service providers.
Snapshot: September 27, 2026.
RevenueBase is a B2B data infrastructure company. Its September 3, 2026 published methodology describes a graph of 60 million companies and 398.9 million professional contacts; these platform figures differ from this page's totals. Published methodology ↗
Preemptive cybersecurity companies by metro in the United States
- Preemptive cybersecurity companies in New York108
- Preemptive cybersecurity companies in Chicago62
- Preemptive cybersecurity companies in Miami58
- Preemptive cybersecurity companies in Atlanta56
- Preemptive cybersecurity companies in Austin56
- Preemptive cybersecurity companies in Dallas56
- Preemptive cybersecurity companies in Houston52
- Preemptive cybersecurity companies in Washington50
- Preemptive cybersecurity companies in Boston36
- Preemptive cybersecurity companies in Tampa36
- Preemptive cybersecurity companies in San Diego33
- Preemptive cybersecurity companies in Los Angeles32
- Preemptive cybersecurity companies in Las Vegas29
- Preemptive cybersecurity companies in Orlando28
- Preemptive cybersecurity companies in Arlington27
- Preemptive cybersecurity companies in Denver26
- Preemptive cybersecurity companies in Phoenix25
Questions about this company list
What does Exact match mean for preemptive cybersecurity companies?
The separate RevenueBase SmartSearch column identifies inclusion at the closest semantic matching preset. It is not a literal keyword match, a per-company confidence score or a quality endorsement. Changing the search form opens a new search in RevenueBase; it does not reclassify these saved rows.
How many preemptive cybersecurity companies did RevenueBase find based in San Francisco, United States?
The saved snapshot records 60 matching company records, 4,953 tracked contacts and 1,042 verified emails. The public preview displays 25 selected records.
Where do the company descriptions come from?
RevenueBase compiles company information from public sources, including company websites and public professional profiles such as LinkedIn, alongside information supplied by companies. The short recorded excerpt shown here is separate from the complete business description used for matching; individual source URLs and collection dates are not provided in this public snapshot.
How are the public companies ordered?
The selected public records are ordered by contacts tracked in RevenueBase, highest first. Contact coverage is a prospecting measure, not an assessment of the company's services or quality.
How can I get contact information?
Select a company's contact count to open its filtered contacts in RevenueBase. Free signup is required and includes 500 credits and limited free results. Verified emails, direct dials and mobile numbers depend on available coverage.
How current is this list?
Snapshot: September 27, 2026. Review each company's website for current services and locations. A recorded business description does not establish that every company offers every service named in the search.
What do headquarters and employee bands mean?
These are recorded company-level fields, rather than a map of every branch or a count of specialists. Missing headquarters or employee bands are labeled; older records may show a location separately from recorded headquarters.
Build your next target company list
Adapt this niche search and work with available contacts in RevenueBase.
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Cite this list
RevenueBase Data Team. Top 25 preemptive cybersecurity companies based in San Francisco, United States. Snapshot: September 27, 2026. https://revenuebase.ai/companies/preemptive-cybersecurity-companies/united-states/san-francisco.
This is a selected public preview of saved company records, rather than an independently verified census. Open the source page ↗
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